PG cannot execute UPDATE in a read-only transaction出现这种情况时,说明SQL语句可能是运行在一个PG集群中的非master节点上。查看data/pg_hba.conf。 SELECT pg_is_in_recovery(); This cannot return true in a master server because the only time a master server can be in recovery。 还有如下可能Normal...
postgres=#insertintot1values(1); ERROR: cannotexecuteINSERTinaread-onlytransactionpostgres=#begintransactionreadwrite; ERROR: cannotsettransactionread-writemode during recovery 软锁定 1、设置default_transaction_read_only postgres=# altersystemsetdefault_transaction_read_only=on; ALTERSYSTEM 2、重载配置 postg...
您显式启动了具有START TRANSACTION READ ONLY或类似配置参数的只读事务。 将配置参数default_transaction_read_only设置为 to a streaming replication standby server。 如果将default_transaction_read_only设置为on,则可以使用以下命令启动读写事务 代码语言:javascript 运行 AI代码解释 START TRANSACTION READ WRITE; 或...
/* translator: %s is name of a SQL command, eg CREATE */errmsg('cannot execute %s in a read-only transaction', cmdname))); } 当XactReadOnly为true时,就抛出报错,XactReadOnly是一个Bool类型的全局变量。那这里大概明白设计思路了,当执行一些操作时调用PreventCommandIfReadOnly函数,如果库是只读状态...
ERROR: cannot execute DELETE in a read-only transaction 可以设置事务级WRITE覆盖这个默认值digoal=> begin; BEGIN digoal=> set transaction read write; SET digoal=> delete from tbl_test; DELETE 1008 或者设置SESSION级参数,覆盖之digoal=> set session default_transaction_read_only=off; ...
ERROR: cannot execute INSERT in a read-only transaction postgres=# begin transaction read write; ERROR: cannot set transaction read-write mode during recovery 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 硬解锁 重命名 recovery.conf 为 recovery.done。
errmsg('cannot execute %s in a read-only transaction', cmdname))); } 当XactReadOnly为true时,就抛出报错,XactReadOnly是一个Bool类型的全局变量。那这里大概明白设计思路了,当执行一些操作时调用PreventCommandIfReadOnly函数,如果库是只读状态进行写操作就抛出报错。
This is a high-level notion of read-only that does not prevent all writes to disk. mydb=# begin; BEGIN mydb=# set transaction read only; SET --插入数据失败 mydb=# insert into t values(generate_series(1,10000),'rudy'); ERROR: cannot execute INSERT in a read-only transaction...
ERROR: cannot execute DELETE in a read-only transaction # 可以设置事务级WRITE覆盖这个默认值 digoal=> begin; BEGIN digoal=> set transaction read write; SET digoal=> delete from tbl_test; DELETE 1008 # 或者设置SESSION级参数,覆盖之 digoal=>set session default_transaction_read_only=off;#在恢复数...
有了安全快照的概念之后,我们还可以增加延迟事务的概念,用户可以通过“BEGIN TRANSACTION READ ONLY, DEFERRABLE”命令来开启一个延迟事务。 所谓延迟事务指当这个只读事务获得快照后,并不马上执行,而是等待所有的并发事务提交。 如果在等待过程中发生了rw依赖,那么这个快照被废弃,重新获得一个新的快照,并继续等待并发事务...